Boat-propelling mechanism



Sept. 2, 1924.- 1,506,847

0. MAKI ET AL 30m PROPELLING MECHANISM Filed Oct. 8. 1921 2 8h0h8hoet 1I N VEN TORS WITNESS:

Sept. 2, 1924. 1,506,847.?

0; MAKI ET AL BOAT PROPELLING MECHANISM Filed Oct. 8. 1921 2ShoOtI-Sheet 2 Patented Sept. 2, 1924.

OTTO MAKI AND KARL ARLIN, 01" IAILMER, MASSACHUSETTS.

BOAT-PROPELLING MECHANISM.

Application filed October 8, 1921. Serial No. 506,482.

To all whom it may concern:

Be it known that we, O'r'ro MAKI and KARL ARLIN, citizens of Finland,residing at Palmer, in the county of Hampden and State of Massachusetts,have jointly invented cer tain new and useful Improvements in Boat-Propelling Mechanism, of which the following is a specification. I

This invention relates to improvements in boat propelling mechanism andmore particularly to mechanism adapted for propelling small pleasureboats, fishing boats and the like. The mechanism is normallywind-actuated although provision is made whereby hand or foot power maybe substituted therefor in emergency. With the foregoing and otherobjects in view the invention consists in the combination andarrangement of parts to be hereinafter fully described, pointed out inthe appended claim and illustrated in the accompanying drawings whichform a part of this application and in which Fig. 1 is a longitudinalsectional view through a boat provided with our propelling mechanism.

Fig. 2 is a fragmentary view of Fig. 1 illustrating the wind wheel andsupports.

Fig. 3 is a plan view of Fig. 1 on line 3-3 thereof.

Figs. 4, 5 and 6 are details of the wing construction.

Fig. 7 is a section on line 7-7 of Fig. 1.

Fig. 8 is a detail of the foot propelled mechanism.

Fig. 9 is a section on line 99 of Fig. 1.

Like reference characters denote corresponding parts throughout theseveral views.

The reference numeral 1 denotes a small boat in the stern of which isplaced the propelling mechanism comprising a frame formed of uprightsand connecting bars 2, 3 and upon said frame the auxiliary framecomposed of the long uprights 4 and the relatively short uprights 5 andconnecting bars 6 is adjustably secured, the lower ends of the longuprights being connected by pivot bolts 7 to the aforesaid bars 3, saidauxiliary frame in operative position being secured to one of the mainframe bars 3 by a link and staple 8, 9 secured together by the lock 10.

In bearings 11 disposed on top of the auxiliary frame a crank shaft 12is journaled and upon one end thereof the wind wheel disc 13 is madefast, said disc being formed with a plurality of radial face grooves 1&in which the ends of the wing bars 15 are secured, said bars 15 carryingthe wings formed of the hinged sections 16 which sections are adapted tobe opened and closed by the action of the wind. The wind blowingdirectly ahead or astern between the wing sections will open them andcause them to rotate the disc 13 and crank shaft, this rangement forminga wind motor.

A pitman 17 normally connects the crank portion of the crank shaft, bymeans of pin 18, to the longitudinally slotted portion 19 of the lever20, said lever beingfulcrumed upon the pin 21, carried by one frame bar3, and pivotally connected to the link 22 which is connected by the pin22 and joint 23 to the double crank shaft 24 arranged upright in thecasting 25 secured to the stern rail of the boat.

A propeller fork 26 is pivotally supported in the casting 27, secured tothe boat, and in each prong of the fork a sectional winged propellerblade 28 is secured, the hinged sections of each blade opening andclosing upon a pintle 29 extending longitudinally of the blade,operation of the blade sections being caused by water pressure as theblades are oscillated upon their pivotal supports 30 through the mediumof the blade extensions 31 connected by joints 32 to the links 33 whichare secured each to one of the cranks of the double crank shaft 2 1. Asthe disc 13 is rotated by wind action upon the wings 16 the pitman 17 isoscillated which, through the medium of the connections to the propellerblades oscillates the same in opposite directions thus causing them toopen and close alternately and so to propel the boat through the water.As the lower or free ends of the propeller blades are moved away fromthe boat they are opened by water pressure, the resistance of the waterto the blade movement in this direction propelling the boat forward; thereverse movement of the blade creates little water friction.

In the event the boat is becalmed at sea or the wind is at an angle tothe wings it may be operated as follows: The pitman 17 is disconnectedfrom the lever 20 and a pitman 34 eccentrically connected by pin 34 tothe gear wheel 35 is connected to the pin 22 aforesaid, said pin beingprojected beyond the oint 23, said wheel 35 being operatively supportedby the casting 36, carried by one frame bar 3, said wheel being in meshwith the large gear Wheel 37 theaxle 38 of Which is journaled in thebearings 39, the opposite ends of said axle 38 having fast thereupon theoppositely extendingarms 40' Whichare" connected by the links 41 to theslide arms 42, arranged in the slide bearings 43, and providedterminally With the pedals 44 adapted to be manipulated bytheo'p'er'ato'r.

Should it be desired to operate the boat by hand-thepitman45 connectedto the hand lever 46 fulcrumed to the bearing 43 is placed in engagementWith-the pin 34 and the said lever oscillated to rotate the gear Wheel37 and. actuate the connections thereof and so drive the propellers. Theboat is steered by means of the lever 47 which extends through anelongated perforation 48 in the sternend' of the'boat-and is connectedto or made integral with the propeller fork 26.

When the boat is not in use or When-it is propelled by man power theauxiliary frame may be folded down into the-position shown dottedinFig. 1. This is done by 'disconnecting the staple and link 8,9,-remoying three of the wings'a'n'd Wing bars,'a'n'd folding the Wings,when the several Wings Will be suspended from the disc 13 as shown indotted lines, Fig. 1, and the auxiliary frame and connectionswillrest=upon the main frame as shown.

VVhatis claimed is The combination with a boat, of a frame, a'Wind motorcarriedthereby, a'pair of cooperating propellers, poWer transmissionmechanism releasably connecting said Wind motor and propellers,foot-controlled propelle'r actuating mechanism adapted for connectionthereto interchangeably With-said wind motormechanism, saidfoot-controlled mechanism comprising a pair of slidearms, pedals carriedby said arms, and steering means for said boat. I a i In testimonythatwe claim the foregoing a's'our own We have hereto affixed oursignatures in the presence of a subscribingv vitnessl OTTO MAKI. I KARLARLIN;

Witness":

- Z; J. BRANNICK. 1

